<?php
	require './Class/MyPdo.class.php';
	$p = new MyPdo();
	$sql = "select * from service_city where level = ?";
	$res = $p->dql($sql,array(2));
	ob_start();
	echo '<pre>';
	var_dump($res);
	$str = ob_get_contents();
	echo strlen($str);
	